Main Beam Headlamps: Notes

MAIN BEAM HEADLIGHTS - DESCRIPTION 

: The vehicle is equipped with two main beam headlamps in the headlights. The main beam headlamps are switched on from the steering column stalk:

• with the dipped beams on, by pushing the lever towards the dashboard (stable mode)
• in flashing mode, by pulling the lever toward the steering wheel (unstable mode)

The switching on of the main beam headlamps is managed by the Body Computer. Activation and/or deactivation information is sent via the CAN: in this way, the "main beam" warning light is activated in the instrument panel.

MAIN BEAM HEADLIGHTS - FUNCTIONAL DESCRIPTION:  There is a single (ground) signal sent by the steering column stalk H005 to the Body Computer M001 that manages the main beam headlights in both fixed and flashing mode: from pin 2 of H005 to pin 36 of connector F of M001; the signal sent is coded by means of resistive dividers so that multiple information can be sent by the steering column stalk to the Body Computer via a single connection. The reference ground reaches pin 10 of H005 from pin 34 of connector F of M001. The Body Computer M001 - connector A - receives a direct power supply from the battery through the line protected by maxi fuse F01 of the engine compartment control unit B001.

The Body Computer M001 receives an ignition-operated power supply (INT) at pin 2 of connector E: this signal is used, amongst other things, to "wake up the network".

The ground reference reaches pins 9, 10 of connector E of Body Computer M001. The Body Computer M001 controls the power supply for the main beam headlights in the headlamps F010 (left) and F011 (right) from pin 22 of connector B. The circuit is controlled by relay switch T02 and protected by fuse F09, both located in the engine compartment junction unit B001.

The Body Computer M001 is connected through the CAN line to the instrument panel E050 to manage the "main beam headlights on" warning light.